Propelling mechanism.



PATENTED DEC. l2,v 1905.

W. J. CHANCE. PROPELLING MBCHANISM. APPLIUATION funn Nov. 3,1904.

UNITED STATES PATENT oFF-ICE.

Speccation of Letters Patent.

Patented Dec. 12, 1905.

Application iledNovember 3, 1904-.. Serial Nol 231,313.

To all whom t nca/,y concern:

Be it known that I, WILLIAM JEFFERSON CHANCE, a citizen of the United States, residing at Dawson, in the Territory of Yukon and Dominion of Canada, have invented certain new and useful Improvements in Propelling Mechanisms, of which the following is a specication.

My invention relates to improvements in propelling mechanisms g and the object of my invention is the provision of a mechanism which will overcome the loss of power created by the lift in paddle-wheel propellers, which can be used upon canal-boats or other boats where the draft is light and the water disturbance is slight, which will save space and insureincrea'sed power, which will accommodate itself to the stream and overcome obstructions, which will reduce the friction. of the working parts and insure an easy running and long life, which can be used as a motor for transmitting power, and which will be thoroughly efficient and practical in every particular.

With these objects in view my invention consists of a propelling mechanism embodying novel features of construction and combination of parts, substantially as disclosed herein.

Figure 1 represents a sectional view taken on the line 1 1 of Fig. 2. top plan view of the complete mechanism, and Fig. 3 represents a detail sectional view on the line 3 3 of Fig. 2.

' In the drawings, the letter A designates the framework or structure of my mechanism, which is attached to the boat at the proper place when used asa propelling mechanism or is anchored in a running stream when used for transmitting power. The frame at each end is provided with the angular portions B, each of which is provided with the shaft-bearings C, in which are journaled the pair of central crank-shafts D, and the pair of side crankshafts F, the shafts of the crank-shafts c shafts F, the shafts of the crank-shafts F,carrying the outer cranks E, to which are connected the pair of driving-pitmen G, to which power is transmitted lfrom the engine or other source of energy. I also provide the pair of connecting-rods consisting of the rails or strips H and the two pairs of side connectingrods consisting of the rails J, and between Fig. 2 represents a said rails are attached the cross-braces K, which hold the rails at the proper distance apart, and mounted between said rails are the series of paddles, each of which consists of the horizontal arms M, connected by the cross-pieces L, and the vertical paddles M, connected to the air of horizontal arms by the braces MZ, an between the braces K and the cross-pieces L are placed cushioningsprings N.

From the foregoing description, taken in It is evident that I provide a mechanism which will be efficient and practical when used upon boats or which can be used as a water-motor.

I claim- 1. A propelling mechanism, consisting of the frame, the crank-shafts mounted in each end of said frame, the pitmen connecting said shafts, the longitudinal rails connected to the cranks of said crank-shafts, and the series of angular pivoted paddles carried by said longitudina rails.

2. A propelling mechanism, consisting of the frame, the crank-shafts mounted in each end of said frame, the pitmen connecting said shafts, the longitudinal rails connected to the cranks of said crank-shafts, and the series of angular pivoted paddles carried by said longitudinal rails and cushioning-springs connected with said paddles.

3. In a propelling mechanism, the combination of the longitudinal rails, the angularshaped paddles pivoted to said rails and the cushioning-springs connected to said paddles.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM JEFFERSON CHANCE.

Witnesses:

LEo BEEGHsLY, THOMAS ANDREW FIETH.

IOO 

